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000 

WWUS20 KWNS 191951

SEL4

SPC WW 191951

NDZ000-200200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 704

NWS STORM PREDICTION CENTER NORMAN OK

255 PM CDT SAT JUL 19 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF WESTERN AND CENTRAL NORTH DAKOTA



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 255 PM UNTIL

900 PM CDT.



HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 90 MILES WEST

NORTHWEST OF GARRISON NORTH DAKOTA TO 40 MILES EAST SOUTHEAST OF

BISMARCK NORTH DAKOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 702...WW 703...



DISCUSSION...THUNDERSTORMS INCREASING IN NWRN ND.  WITH STEEP LAPSE

RATES AND VEERING SHEAR PROFILES...STORMS WILL CONTINUE DEVELOPING

SEWD. SUPERCELLS ARE LIKELY WITH PRIMARY THREAT OF LARGE HAIL AND

DAMAGING WINDS...HOWEVER ISOLATED BRIEF TORNADOS ARE POSSIBLE.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 30030.





...HALES

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